that lawn science would disappear from the yards and end up in the garbage cans right here. >> supporting candidate jimmy nguyen in city council reyes against incumbent rose publicly claimed he was attacked with a knife early this morning. he says he and two other supporters shot video sunday night matt way lan disposing of a nguyen campaign sign at a park. thaen they showed video he shot and confronted at that same park early this morning disposing of more signs who are you? get away from me. get away from me. >> he then said that i have a knife here. he reached, you know, down below his waist and made the swiping motion. i jumped back. >> way lan said he disposed of signs put on his own lawn that he didn't want in his own trash cans. he claimed he got scraped from being pushed to the ground before being blinded by the camera light sfls i'll admit, i blus herbed. i threatened them. i said i've got a knife. i'm going to -- you better back away from me, you know, no intention of ever doing anything like that. >> based on a complaint from hererer ra, police say an investigation has started.